SparkFun Electronics Commentsurn:uuid:214d0e4e-f1b1-d287-ce26-ac5b4c9f82492018-02-21T22:27:03-07:00SparkFun ElectronicsCustomer #1080266 on DEV-12053 - Arduino YunCustomer #1080266urn:uuid:fec0e04a-b29a-3da0-2152-f446d717ac5b2017-08-22T17:17:16-06:00<p>I bought one from the Arduino official website. But I got the Linux side (something they call it u-boot) bricked. I&rsquo;m so sad and I need to buy a new one.</p>William Kalfelz on DEV-12053 - Arduino YunWilliam Kalfelzurn:uuid:6d07f385-d5cf-59af-a9d7-2908e9d60d2d2017-04-09T13:28:47-06:00<p>I wonder if bare metal code would work with the linux processor. For real-time stuff?</p>Squirrelius on DEV-12053 - Arduino YunSquirreliusurn:uuid:344cf902-0754-2839-ef5a-6277d1d223a72016-06-11T17:19:11-06:00<p>TYPO in description: &ldquo;combining the power Linux with ease of use of Arduino&rdquo;</p>
<p>Add &ldquo;of&rdquo; between &ldquo;power&rdquo; and &ldquo;Linux&rdquo;</p>M-Short on DEV-12053 - Arduino YunM-Shorturn:uuid:5b95c169-3c81-68a6-6758-f265764d95d02016-02-03T16:53:36-07:00<p>Many of the pins on the ATMega32U4 pull double duty. We don&rsquo;t have graphical datasheet for this board, but feel to check out the <a href="https://cdn.sparkfun.com/datasheets/Dev/Arduino/Boards/QduinoMiniV1.pdf" rel="nofollow" >datasheet</a> for the Qduino which lists all the pin functions on the ATMega32U4 (well the pins it uses anyway). It lists which pins have analog capabilities as well as digital capabilities.</p>JJK on DEV-12053 - Arduino YunJJKurn:uuid:3b822a3c-da9a-e7f6-9563-59b1ae179b9b2016-02-03T15:29:20-07:00<p>Hello,</p>
<p>The description states 12 ADC, but when I view images of this board or check the schematics I only see A0 to A5 pins which means total of 6 Analog inputs. What am I missing here? or does the 12 include all pins such as Vin&hellip;etc.?</p>Customer #136296 on DEV-12053 - Arduino YunCustomer #136296urn:uuid:2e0b8dc6-0498-7d70-fa56-11cfe43ec4772015-01-31T09:51:09-07:00<p>So now that the Intel Edison has been out for a few months, how about a shootout-style comparison?</p>Customer #28359 on DEV-12053 - Arduino YunCustomer #28359urn:uuid:7632ccf7-9cf5-d053-6b00-55e064a3411b2015-01-30T11:54:23-07:00<p>Compare this board to a pcDuino from LinkSprite and you will see that the YUN is inferior in all ways. Pick your criteria, price, HDMI graphics out, RAM, Flash, Ubuntu release stability, USB ports, Wifi etc&hellip; Don&rsquo;t buy this board until you do the comparison. I&rsquo;m using pcDuinos in a product I sell. Its better than RPI too as it has an arduino shield socket.</p>Customer #528460 on DEV-12053 - Arduino YunCustomer #528460urn:uuid:6952a090-1e11-a906-5b17-528b534d65ce2015-01-10T20:37:44-07:00<p>The Yun has a lot of potential but I regret purchasing it. I&rsquo;ve spent far more time fighting with things that should work out of the box than actually using it.</p>
<p>Two examples:</p>
<p>The wifi is shaky. There are a variety of threads about this on the web but no definitive fixes that work for everyone. For me, it usually forgets it has wifi after 20 minutes to 3 hours and requires reset(s) before it can be used again.</p>
<p>Most recently, they changed the serial (usb) baud rate to 250,000. The latest version of the Arduino software that supports the Yun still goes up only to 115,200. As an aside, you have to use a Beta version of the software - the Yun still isn&rsquo;t supported in the official version unless it was added very recently. Anyway, I did find a thread pointing out how to change the baud rate programmatically, but also a warning that it should be consistent between the ROM and the library. To change the library I believe I have to download and build it, which really shouldn&rsquo;t be necessary on Windows. To change the ROM&hellip; well, I don&rsquo;t know that I CAN change the ROM. In any case, this is way more of a science project than I signed up for.</p>
<p>If it worked out of the box and let you program using the Linux-based wifi-supporting SOC and was well integrated with the ATMEGA chip, it would be great. Perhaps some use it in such a way that they don&rsquo;t hit the nasty problems I&rsquo;ve hit (see 2 representative samples above). For me, it&rsquo;s been a an unstable piece of junk with many known problems that don&rsquo;t seem to get addressed.</p>
<p>If you&rsquo;re into science projects and have a lot of free time (or feel lucky), this may be the board for you. If you actually have projects in mind that require a stable platform, this probably isn&rsquo;t it.</p>shinmai on DEV-12053 - Arduino Yunshinmaiurn:uuid:f486f596-4eb9-d65e-fd42-6afdc83b06832014-10-23T02:46:46-06:00<p>Just a heads up for anyone looking to buy a Yun to use with a shield: you should probably take a good look at a side view of the board.
The vertical USB-A -connector and the Ethernet socket are both <strong>WAY</strong> taller than the USB-B -connector on for example an Uno (which is conveniently about exactly the height of the female headers on the arduino plus the height plastic spacers on the male headers on the shield).</p>
<p>Most shields <strong>will not</strong> fit on a Yun, despite the Arduino website claiming that the board is &ldquo;compatible with the most shields designed for Arduino&rdquo;.</p>
<p>Personally I&rsquo;ve used the <a href="https://www.sparkfun.com/products/retired/9282" rel="nofollow" >old retired Screwshield</a> wings as an adaptor (even then, I had to adjust the screwshield wings on the USB host side to make them fit). Another option would be to find the <em>really</em> <strong>really</strong> long stackable headers found on an official Wi-Fi shield, and resolder those on to old shields.</p>Customer #567443 on DEV-12053 - Arduino YunCustomer #567443urn:uuid:feb083cf-19a2-6a5a-4d5a-0bdb01cab74d2014-08-29T10:18:50-06:00<p>Everyone forgots about the SD / Mirco SD cards and there cost. Generally an SD card will cost you another $10 bucks. That makes it a total of $80 that is $20 more then the Yun costs right now. We are not going to count the micro SD for the Yun or the Shield since if you need the storage you will need it for both.</p>xtopher on DEV-12053 - Arduino Yunxtopherurn:uuid:9d3cc3a5-5baa-5a91-cdd4-3b837f21ec7b2014-08-19T09:48:57-06:00<p>Ah, it is 16MB! Thanks for the heads up!</p>AnotherMike on DEV-12053 - Arduino YunAnotherMikeurn:uuid:3724b9eb-192d-44d9-d601-6a24ac4adf772014-08-19T06:40:00-06:00<p>The Arduino Yun product page says the Linux processor has 16 MB Flash. You say 32 MB. Who&rsquo;s right?</p>
<p>http://arduino.cc/en/Main/ArduinoBoardYun</p>Customer #365233 on DEV-12053 - Arduino YunCustomer #365233urn:uuid:f3edb85d-db91-ce5e-3033-01b74cf588942014-06-30T15:54:06-06:00<p>Yes you can. You&rsquo;ll have to install it from the package manager (opkg) though or compile from source.</p>Customer #365233 on DEV-12053 - Arduino YunCustomer #365233urn:uuid:ae0f7133-534c-7f3e-a6de-6e308b80cb2e2014-06-30T15:53:18-06:00<p>Run into any problems at all or any downsides? Thinkiing of getting a few of these boards myself.</p>Customer #365233 on DEV-12053 - Arduino YunCustomer #365233urn:uuid:2d8e4d2f-e60d-67b9-be51-ef11a83275962014-06-30T15:51:54-06:00<p>The Arduino Yun product page does state however that it supports PoE. Hmmm Anyone tried to get this to work?</p>M-Short on DEV-12053 - Arduino YunM-Shorturn:uuid:d53b218d-a9d3-8fdf-6661-f5768cb799f22014-06-30T09:11:53-06:00<p>There is no PoE module on this board. At this moment I don&rsquo;t believe there is a PoE module available for this board either.</p>Customer #365233 on DEV-12053 - Arduino YunCustomer #365233urn:uuid:544c2513-bd87-fab9-582a-306527dcddae2014-06-30T04:49:57-06:00<p>Does this board come with the PoE module preassembled on the board?</p>M-Short on DEV-12053 - Arduino YunM-Shorturn:uuid:dcf8c383-294c-8899-5a63-ba999c9ba04e2014-03-06T16:13:29-07:00<p>And don&rsquo;t forget the PCDuino, Beagle Bone Black, and every other microcontroller or single board computer. Honestly there is probably always something out there that means your specific need. the question is do you want to learn a new board every time you have a new need. Each of these boards have their advantages and disadvantages. Often the advantage is &ldquo;I kind of know my way around this board already&rdquo;.</p>vs on DEV-12053 - Arduino Yunvsurn:uuid:d90500aa-41cb-6ab2-9787-064f0eca3f282014-03-04T14:24:16-07:00<p>Bought one of these to try out but returned it. The linux side is a really pitiful. RPI is a much better choice. The link between the arduino is in theory great, but not really that useful. It is just a serial link and they used up the only hardware serial line. Seriously the UNO is obsolete. Coupling it to a linex machine is useless. Get a 32bit teeensy 3.1 and serial to RPI. Now you can do anything ! Three extra hardware serial lines I2C I2S and two SPI.</p>DemolishManta on DEV-12053 - Arduino YunDemolishMantaurn:uuid:c9a3f813-3e99-f089-abe8-16be830203c92014-01-31T16:35:23-07:00<p>Yeah, I was dismayed at this too. I went and picked up a USB micro cable that came with a vehicle 12V to 5V dc to dc converter. Repacked the converter to connect to wires to run off of 12V. Shortened the USB micro cable to a few inches and mounted everything in my chassis. Not perfect, not pretty. Runs well enough. The brand is &ldquo;Just Wireless Dual USB Car Phone Charger&rdquo;. It comes with cable to charger adapter. $20 at Walmart.</p>
<p>I am guessing there will be more than one Yun shield for power. Are you using the Wifi programming of the 32u4? The Yun supports programming the 32u4 over wifi. Which makes the cable not needed for me. YMMV.</p>DemolishManta on DEV-12053 - Arduino YunDemolishMantaurn:uuid:d6524540-3711-ac09-e75f-3727ad621a542014-01-31T16:26:00-07:00<p>An hour of engineering time dwarfs the cost of both. So an integrated solution can give you more time to actually solve the problem you intended to solve. The Pi is very capable as is the Yun. If I needed a user interface that connects to an HDMI monitor the Pi is a shoe in. For an embedded wifi capable robot I would reach for the Yun. It depends upon application and needs. Cost is not a factor in some cases. In my case time was way more important than device costs.</p>
<p>Now that I have some time on the Yun I think paying the extra for the integration is well worth it. Even if a Pi could do the same task equally well.</p>DemolishManta on DEV-12053 - Arduino YunDemolishMantaurn:uuid:b1dd4325-813d-deb8-e609-081450282d622014-01-31T16:19:42-07:00<p>Okay, I rarely get impressed by new boards. I was not impressed with the Due for my needs as the 5V support was an issue. So for certain projects I used the Uno32. Plenty of speed for my app. Now I needed a more generic set of tools for a sensor platform I am building. I wanted Linux and generic 5V IO. So I ordered this board. Wow! Not only are they nicely integrated on board they are nicely integrated in software. This combination is a serious win for my engineering needs. All I need to provide is power to platform and everything else goes over wifi. There is a serious focus on using Python internally and web technologies. Both of these are used a lot in our company.</p>
<p>So if you need a mobile platform for sensors this is a good piece of that system. I used the Yun combined with the Rover (https://www.sparkfun.com/products/10336) and it driver board (https://www.sparkfun.com/products/11593). I am using a couple of the 9 DOF boards for some inertial sensor testing. Putting these together has been relatively simplistic and mainly just deciphering datasheets. The Yun has been the least of the learning curve. That is how you know a device is designed well. You spend little time making it work.</p>dave_illini on DEV-12053 - Arduino Yundave_illiniurn:uuid:01fd68aa-0dc2-4573-52c6-74ff2c4366fe2013-12-18T11:39:37-07:00<p>What are the specs for the Micro-SD recommended to use? Such as max size allowed, class, min recommended size, etc.
I dug thru the manual a little and didn&rsquo;t see this (but could have missed it). I want to get started
programming but want to order a micro sd card first</p>crashfrog on DEV-12053 - Arduino Yuncrashfrogurn:uuid:8d379a44-2620-d825-71e0-ebdd231d94702013-12-12T14:57:50-07:00<p>True - but, how is your Pi going to talk to the Alamode? Bit-banging serial? Well, now you have to define and implement a serial command system in two languages. Doable, but a major headache if you just want to send &ldquo;pin on; pin off&rdquo; messages based on network or web events.</p>
<p>How is your Pi going to get on your wifi network? Setting up a Pi requires an S-video or HDMI display, a keyboard, and editing etc/network/interfaces.</p>
<p>Yun&rsquo;s Bridge and Console libraries - the first exposes a key/value database in both the Linux and Arduino spaces, and the second provides Telnet access to the 32u4&rsquo;s Serial interface - are well worth the price, imo. The astonishingly easy network setup is just the icing on the sweet, sweet cake. All in a standard Arduino footprint. I don&rsquo;t think I&rsquo;ll ever bother with Pi + Arduino again, Yun just makes it so easy. I&rsquo;d rather spend the $20 than lose the weekend.</p>kylehotchkiss on DEV-12053 - Arduino Yunkylehotchkissurn:uuid:f26f5099-8992-ce53-cfca-7ea571a242e82013-12-10T11:27:03-07:00<p>Can you run NodeJS on this thing? if so, I want!</p>Customer #288413 on DEV-12053 - Arduino YunCustomer #288413urn:uuid:f6ec44ab-b3bf-d336-7ba6-df1bb05ef99b2013-12-05T19:08:48-07:00<p>Hmm. Tough call. You can get an actual real Raspberry Pi and the Alamode pi Shield which then puts a full arduino on top of the pi&hellip;and you have the best of both worlds for actually a little less.</p>
<p>RaspberryPi $35 : https://www.sparkfun.com/products/11546
Alamode $35: http://www.seeedstudio.com/depot/alamode-arduino-compatible-raspberry-pi-plate-p-1285.html</p>
<p>And its still cheaper than this.</p>
<p>If they really wanted this to take off they would have made it cheaper than actually buying the same thing seperately. At $50 I might be a buyer of this. At $77, I am a buyer of a real pi + an arduino bridge shield like the Alamode.</p>c51749 on DEV-12053 - Arduino Yunc51749urn:uuid:a98fca39-4399-b038-d4d7-ca1120ed45802013-12-04T11:19:15-07:00<p>You can find some code snippets at http://sourceforge.net/projects/arduinoynsnippets/ and you can add content there, too.</p>Customer #146820 on DEV-12053 - Arduino YunCustomer #146820urn:uuid:b4521918-e817-4589-d931-b6f59fb9f54f2013-12-04T11:15:32-07:00<p>BBB is actually about $25 cheaper, but&hellip;</p>
<p>With BBB you get the fun of writing your own kernel driver if you want any hope of decent latency on DIO ADC etc. Even just using the (slow) userspace IO interface on the BBB is largely undocumented, obsolete-documented, and generally a huge pain compared to Arduino.</p>
<p>That said, I&rsquo;m not sure I&rsquo;ll abandon my chosen solution of Arduino + BBW where needed just yet. I&rsquo;m curious how stable the Lineno is and wonder how easy it is to upgrade software on it?</p>Kamiquasi on DEV-12053 - Arduino YunKamiquasiurn:uuid:87c928a9-28da-7b06-3108-802bb251bfb02013-12-04T07:27:04-07:00<p>Because it interfaces a Linux-capable system with an Arduino on a single small form-factor board and is largely compatible with existing Arduino shields?</p>
<p>If neither of those are of any interest, then I agree there&rsquo;s more appropriate alternatives :)</p>jjniccolo on DEV-12053 - Arduino Yunjjniccolourn:uuid:943c4f77-0e6f-1f3f-8c58-cbd251739bb12013-12-04T07:13:00-07:00<p>Why pay for this when you can buy a beaglebone black for about the same price?</p>nanogear on DEV-12053 - Arduino Yunnanogearurn:uuid:603bd659-e9a5-b5e3-086f-3b8ebe6b01d72013-12-02T14:06:41-07:00<p>Thank you!!!</p>nanogear on DEV-12053 - Arduino Yunnanogearurn:uuid:6cf38041-88fa-7e01-2181-5921027e8fce2013-12-02T14:06:20-07:00<p>Thanks for the reply</p>Kamiquasi on DEV-12053 - Arduino YunKamiquasiurn:uuid:c0a7f20f-7cab-1ec9-87f7-7d58bfb5f9682013-12-02T13:43:04-07:00<p>Looks like the answer is YES: <a href="http://forum.arduino.cc/index.php?topic=187319.0" rel="nofollow" >arduino.cc: Yún and SSL</a> (Somebody specifically asks about https to verify)</p>XLT_Frank on DEV-12053 - Arduino YunXLT_Frankurn:uuid:42480b9a-d510-5d46-ee0f-245f18d4792b2013-12-02T13:26:25-07:00<p>Will it support https?</p>doobie on DEV-12053 - Arduino Yundoobieurn:uuid:1230043c-d733-d6ca-49db-21e54162e12f2013-12-02T12:54:59-07:00<p>I&rsquo;m looking for a platform to access a large e-ink display, but the combination for timing AND image size has been problematic, any chance that this would work well?</p>xtopher on DEV-12053 - Arduino Yunxtopherurn:uuid:548c8963-f4e1-ad34-4dfa-9dde2b4335c82013-12-02T09:00:26-07:00<p>Should be working now, sorry about that.</p>Customer #462331 on DEV-12053 - Arduino YunCustomer #462331urn:uuid:2de9c5f5-0220-c4f3-fe54-a5bd8517c8322013-12-01T22:13:53-07:00<p>No onboard regulator - now that&rsquo;s sparkfunny.</p>MrYon on DEV-12053 - Arduino YunMrYonurn:uuid:8d7f71b6-46bf-53c2-7d91-b9214365c0602013-11-30T18:39:55-07:00<p>Yes, but for what I&rsquo;m doing, that&rsquo;s a bigger sledgehammer than just providing regulated 5V.</p>chriscross93 on DEV-12053 - Arduino Yunchriscross93urn:uuid:324ccf4c-3574-9dd4-60d6-8a9ac1c4651f2013-11-29T23:23:35-07:00<p>You can, for all intents and purposes, treat it as an Leonardo* if you so desire &ndash; ignoring the linux box.</p>
<p>However, even if all you do is set it up to get on your WiFi, you get to upload code wirelessly. Which, I at least, really like.</p>
<p>*There are a few differences, because the Leonardo does away with the separate USB-serial.
http://www.doctormonk.com/2012/10/arduino-leonardo-vs-arduino-uno.html</p>Adzze on DEV-12053 - Arduino YunAdzzeurn:uuid:bd08ab9f-5e38-0b88-99d9-972837c1d75e2013-11-29T21:59:16-07:00<p>You could use PoE to power your board, if you can get an ethernet cable to it?</p>OldFar-SeeingArt on DEV-12053 - Arduino YunOldFar-SeeingArturn:uuid:f778e95f-41dc-9459-d7a4-1f80fee98e4b2013-11-29T12:49:18-07:00<p>Couldn&rsquo;t get the schematic link to work; found this on the net:
http://arduino.cc/en/uploads/Main/arduino-Yun-schematic.pdf</p>MrYon on DEV-12053 - Arduino YunMrYonurn:uuid:22a9063c-92fe-fde9-552b-9cda5c77495c2013-11-29T11:50:46-07:00<p>In the light of &ldquo;there&rsquo;s always <em>something</em> missing&rdquo; in the Arduino flavor that you want, why oh why don&rsquo;t these things have an on-board regulator?</p>
<p>Sure, that may not be a problem for a lot of people, but for my application I need the USB port free as a communications input, not an always-connected power source.</p>
<p>Oh well, a solvable problem, just wish it wasn&rsquo;t a problem to begin with.</p>
<p>Otherwise a very exciting board!</p>MrYon on DEV-12053 - Arduino YunMrYonurn:uuid:4d9af608-5038-1efc-86ef-446e80886c502013-11-29T11:37:12-07:00<p>Finally these are back in stock. I hope more of this style of Arduino board are developed. Start with a &ldquo;real&rdquo; Arduino that is compatible with all the sketches and shields out there to take care of the raw hardware interfacing and realtime issues. Then attach that to a &ldquo;real&rdquo; processor that can do heavy lifting for computing and access to the real world via Ethernet/Wifi/USB. Sure, it&rsquo;s possible for the ATMEGA to be networked, but it&rsquo;s clear to me that it&rsquo;s way more work than its worth for all but the most basic things.</p>
<p>I just attempted to do something with a Nano + Ethernet/SD setup, and damn was it painful. By the time you load Ethernet + SD libraries you have almost nothing left for program and data space. The W5100 is a toaster it gets so hot&mdash;heat sinks are on order in case I find something else to do with it. The Ethernet&rsquo;s DHCP support blocks the entire sketch while it&rsquo;s doing its thing. For this project I needed to be able to continually service the CDC port and can&rsquo;t afford it to go dark for 60 seconds while DHCP times out. Oh, and you get the unique joy of managing your own MAC Addressing.</p>
<p>Contrast that to the Yun, where all of these problems are taken care of, yet doesn&rsquo;t cost much more than a traditional Arduino plus Ether/SD. What was a very long, program/SRAM-busting sketch that took hours to work-almost-right becomes doable in a short shell script. So now that these are available again, I&rsquo;m writing off the time on this particular project and just running it on a small network of Yuns. Can&rsquo;t complain too much, I learned a lot, both in how the Arduino works and what it&rsquo;s like to bump into its limits.</p>
<p>I&rsquo;m not knocking the Arduino&mdash;I&rsquo;ve just discovered them and am having a blast. There&rsquo;s a ton of problems that fit within the Arduino&rsquo;s capabilities. But coming from a long career in software (everything from apps to drivers to networks), my patience for doing things the hard way is thin at this point. Pairing the Arduino with a larger processor extends the reach of these things by an order of magnitude, and lets you solve the problem at hand in much less time.</p>Tycho Vhargon on DEV-12053 - Arduino YunTycho Vhargonurn:uuid:af946e03-b79a-a4f4-a0ab-594db3c528852013-11-29T11:06:42-07:00<p>Yes, if I&rsquo;m reading the Arduino website correctly. The setup is a bit more complicated, akin to configuring a linux device, but once it&rsquo;s setup it can be programmed in a way very similar to the Uno.</p>nanogear on DEV-12053 - Arduino Yunnanogearurn:uuid:9d4fd6bb-71ce-4aae-8785-d8f10a52ca2e2013-11-29T10:59:42-07:00<p>So this one can be programmed as same as the arduino uno?</p>MrAureliusR on DEV-12053 - Arduino YunMrAureliusRurn:uuid:b634143b-04f3-6c1d-b5fd-a49c6bd76d582013-11-29T10:28:07-07:00<p>Crazy, man, so much in one package. I feel conflicted about whether this even fits the Arduino stereotype.</p>